Fhr

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Initialism of fetal heart rate. abbreviation, alt-of, initialism
  2. 2
    Initialism of fluoride-cooled high-temperature reactor. abbreviation, alt-of, initialism

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.